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I read the whole thread, but I still didn't see any tips for playing as Dungeon. There are only arguments about whether a Castle is good or not and complaints that it's difficult to build Eyes. I always play on 200% difficulty. Take the first creature with crystals, and as a bonus, take a servant – that's 2 resources out of 4 available on the second turn. If the map isn't too bad (in that case, I'll rest once – I have the right to do so without explanation), then there will be a lot of some kind of resource lying around. Plus, you can conquer, trade on the market for the last one, or take pearls from the dancer. So, I don't see any particular problems with Eyes; they are built very easily. The only drawback is that you can't always get a good hero in the tavern, and sometimes, on the contrary, you get a hero that fits the situation, like Krag Hag or Mephala.